As a registrant, you are responsible for ensuring that your registration dossier fulfils all the REACH requirements at your tonnage band. 

Data waiving refers to omitting some of the information required under REACH Annexes VII-X from your registration. If you need to omit any required information, you need to justify your reasons for not submitting required data. 

Possible reasons for not submitting a study in the dossier are indicated in columns 1 and 2 of the relevant requirement in Annexes VII to X of REACH or sections 2 and 3 of Annex XI of REACH.

If your dossier contains data waivers, the following is verified during the completeness check:

• A justification has been provided in line with columns 1 or 2 of the relevant requirement in REACH Annexes VII to X, or in sections 2 and 3 of REACH Annex XI, and that it has been reported in the appropriate IUCLID field. 
• If the data waiving justification relies on other information (for example, a classification, a study result or the chemical safety report), this information is also included in the appropriate section of the dossier.